+ function() {
	var Dpr = 1;
	var uAgent = window.navigator.userAgent;
	var isIOS = uAgent.match(/iphone/i);
	var isYIXIN = uAgent.match(/yixin/i);
	var is2345 = uAgent.match(/Mb2345/i);
	var ishaosou = uAgent.match(/mso_app/i);
	var isSogou = uAgent.match(/sogoumobilebrowser/ig);
	var isLiebao = uAgent.match(/ebaofast/i);
	var isGnbr = uAgent.match(/GNBR/i);

	function resizeRoot() {
		var wWidth = (screen.width > 0) ? (window.innerWidth >= screen.width || window.innerWidth == 0) ? screen.width : window.innerWidth : window.innerWidth,
			wDpr, wFsize;
		var wHeight = (screen.height > 0) ? (window.innerHeight >= screen.height || window.innerHeight == 0) ? screen.height : window.innerHeight : window.innerHeight;
		if(window.devicePixelRatio) {
			wDpr = window.devicePixelRatio;
		} else {
			wDpr = isIOS ? wWidth > 818 ? 3 : wWidth > 480 ? 2 : 1 : 1;
		}
		if(isIOS) {
			wWidth = screen.width;
			wHeight = screen.height;
		}
		// if(window.orientation==90||window.orientation==-90){
		//     wWidth = wHeight;
		// }else if((window.orientation==180||window.orientation==0)){
		// }
		if(wWidth > wHeight) {
			wWidth = wHeight;
		}
		wFsize = wWidth > 1080 ? 144 : wWidth / 7.5;
		wFsize = wFsize > 32 ? wFsize : 32;
		window.screenWidth_ = wWidth;
		if(isYIXIN || is2345 || ishaosou || isSogou || isLiebao || isGnbr) { //YIXIN 和 2345 这里有个刚调用系统浏览器时候的bug，需要一点延迟来获取
			setTimeout(function() {
				wWidth = (screen.width > 0) ? (window.innerWidth >= screen.width || window.innerWidth == 0) ? screen.width : window.innerWidth : window.innerWidth;
				wHeight = (screen.height > 0) ? (window.innerHeight >= screen.height || window.innerHeight == 0) ? screen.height : window.innerHeight : window.innerHeight;
				wFsize = wWidth > 1080 ? 144 : wWidth / 7.5;
				wFsize = wFsize > 32 ? wFsize : 32;
				// document.getElementsByTagName('html')[0].dataset.dpr = wDpr;
				document.getElementsByTagName('html')[0].style.fontSize = wFsize + 'px';
				document.getElementById("fixed").style.display = "none";
			}, 500);
		} else {
			// document.getElementsByTagName('html')[0].dataset.dpr = wDpr;
			document.getElementsByTagName('html')[0].style.fontSize = wFsize + 'px';
			/*	document.getElementById("fixed").style.display = "none";*/
		}
		// alert("fz="+wFsize+";dpr="+window.devicePixelRatio+";UA="+uAgent+";width="+wWidth+";sw="+screen.width+";wiw="+window.innerWidth+";wsw="+window.screen.width+window.screen.availWidth);
	}
	resizeRoot();
}()